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<H1>IBM Visualization Data Explorer Programmer&#39;s Reference</H1>
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<H3><A NAME="HDRDXTCV" HREF="progu097.htm#PToC_431">DXTypeCheck,
DXTypeCheckV</A></H3>
<A NAME="IDX2133"></A>
<A NAME="IDX2134"></A>
<A NAME="IDX2135"></A>
<A NAME="IDX2136"></A>
<P><STRONG>Function</STRONG>
<P>
Check that an Array meets a set of specifications.
<P><STRONG>Syntax</STRONG>
<BR>
<TT><STRONG><BR>
&#35;include &lt;dx/dx.h&gt;<BR>
<P><BR>
Array DXTypeCheck(Array a, Type type, Category category, int rank, ...)<BR>
Array DXTypeCheckV(Array a, Type type, Category category, int rank, int
*shape)<BR>
</STRONG></TT><BR>
<P><STRONG>Functional Details</STRONG>
<P>
The routine returns <TT><STRONG>a</STRONG></TT> if that Array meets the
specifications given by <TT><STRONG>type</STRONG></TT>,
<TT><STRONG>category</STRONG></TT>,
<TT><STRONG>rank</STRONG></TT>, and
<TT><STRONG>shape</STRONG></TT>.
Otherwise, it returns <TT><STRONG>NULL</STRONG></TT>.
The shape is specified by <TT><STRONG>shape</STRONG></TT> for
<TT><STRONG>DXTypeCheckV</STRONG></TT> or by the last
<TT><STRONG>rank</STRONG></TT> arguments for
<TT><STRONG>DXTypeCheck</STRONG></TT>.
For <TT><STRONG>DXTypeCheckV</STRONG></TT>, if <TT><STRONG>shape</STRONG></TT>
is
<TT><STRONG>NULL</STRONG></TT>, the type, category, and rank are checked,
but the shape is not.
<P>
<TT><STRONG>rank</STRONG></TT> specifies the rank of the items in the Array:
Scalars have rank 0, vectors have rank 1, and so on.
<P>
<TT><STRONG>shape</STRONG></TT> has rank entries representing the list of
dimensions of the structure.
For rank 0 items (scalars) there is no shape.
For rank 1 items (vectors) the shape is a single number corresponding
to the number of dimensions.
For rank 2 structures, the shape is two (2) numbers, and so on.
<TT><STRONG>shape</STRONG></TT> specifies the rank of the items in the Array:
the number of dimensions in each item of the Array.
Shape has entries where each entry represents the size of the item in
that dimension.
<P>
The type is one of the following:
<PRE><STRONG>
TYPE_BYTE            TYPE_HYPER        TYPE_SHORT
TYPE_UBYTE           TYPE_INT          TYPE_USHORT
TYPE_DOUBLE          TYPE_UINT         TYPE_STRING
TYPE_FLOAT
</STRONG>
</PRE>
<P>
The category is either <TT><STRONG>CATEGORY_REAL</STRONG></TT> or
<TT><STRONG>CATEGORY_COMPLEX</STRONG></TT>.
<P>
<P><STRONG>Return Value</STRONG>
<P>
Return <TT><STRONG>a</STRONG></TT> or returns <TT><STRONG>NULL</STRONG></TT>
(e.g., if the type does not match).
<P><STRONG>See Also</STRONG>
<P>
<TT><STRONG>
<A HREF="progu157.htm#HDRDXGAI">DXGetArrayInfo</A>
</STRONG></TT>
<P>
<A HREF="progu046.htm#HDRARRAYSC">12.3 , "Array Class"</A>.
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